The Calphalon Classic Stainless Steel 12-in. Stir-Fry Pan is built to last. It's made from brushed stainless steel with an impact-bonded aluminum base for fast, even heating, and is dishwasher safe for easy cleanup. Woks are deep-bowled versions of a traditional frying pan, but with a burner-sized bottom that keeps direct heat contained in a smaller zone for Sautéing and searing. With the wok shape, foods can be seared on the bottom, then pushed up the high sides to finish cooking.